![]() The relay's will not kick in unless an external power supply is added to the green com "pin". Grumpy, if you read the relay shield info, you will see a diagram that shows the green "pins" are to be connected, 1 to the positive of the motor, and the other to an external power supply. If creating a circuit to be powered from the arduino is not a good way to go, how else can I tie up the relay shield and microcontroller into a neat package that is mobile and does not require a high voltage power source (like say I wanted to place this stuff in an RC vehicle)? Are there specific batteries for this purpose?Īgain, any links or pointing into the right direction would be great. ![]() How do I connect an external power source when it doesn't come with that connection? This is why I am trying to build a circuit on the breadboard that will amplify my voltage so I can power up this relay shield properly. ![]() For instance I have this relay shield by seeed studio. I'm having trouble with an external power source. I tested each pin separately by connecting a jumper to the board where my meter was already connected to ground and waiting for the output. When I test out each pin I get that 80mA. I read on the product description that the outputs are supposed to be much less, about 40mA & 200-400mA max for the pin output and 5V/ground output respectively. All I did was this simple code to test out my pins for output: I don't leave the meter connected to the pins for long, just for a couple of seconds until the numbers stop moving. I'm assuming that this is what the board is supposed to output and I am supposed to do my thing when it comes to current dividing and all that jazz? I'd like to make sure I didn't get a bum board. So my board isn't acting wonky? I was trying to test the pin out current & the current between the 5V and ground directly and I get that 80 mA & about 900 mA respectively. Transistors, mosfets or H-bridge for amplification of motor's and such.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |